George R.R. Martin, author of "Game of Thrones," joined Twitter on June 9 to a predictably rabid response from fans. Many welcomed him, some suggested ideas for his next book, and others questioned his validity.

Before he was officially verified, Martin's publisher came to his defense:

Are you following a #GRRM impersonator? We can officially announce that @GRRMspeaking is the real deal (though he won't be tweeting much)...